Boiler



(No Model.) 2 Sheets-Sheet 1,

H. O. GROVES.

BOILER.

110.416.3613. Patented Dec. 3, 1889.

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(No Model.) 7 #Sheets-Sheet 2. H. O. GROVES.

BOILER.

No. 416,363. Patented Dec. 3, 1889.

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UNITED STATES PATENT OFFICE.

HIRAM CURRY GROVES, OF NASHVILLE, KANSAS.

BOILER.

SPECIFICATION forming part of Letters Patent No. 416,363, dated December 3, 1889.

Application filed May 16, 1889- To aZZ whom, it may concern.-

Be it known that I, HIRAM CURRY GROVES, a citizen of the United States, residing at Nashville, in the county of Kingman and State of Kansas, have invented certain new and useful Improvements in Boilers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in boilers or steam-generating devices, the object of which is to present the greatest possible amount of heating-surface to the furnace, all the details of which will be hereinafter fully described and claimed.

Some of the superior advantages claimed for my production are the invention of a boiler of extreme lightness, great safety under high pressure, the compensation for expansion .and contraction, and the great ease with which every part is made accessible for cleaning both inside and out. Other advantages are that it presents a great amount of heating-surface in comparison with the size of the furnace, and that a perfect delivery of dry steam is made to the engine. These results I attain by means of the construction and arrangement of the parts hereinafter specifically referred to, reference being had to the accompanying drawings, in which similar letters of reference refer to corresponding parts in all the views.

Figure 1 is a perpendicular sectional view of my invention. Fig. 2 is a perspective front view with the housing removed. Fig. 3 is a sectional view showing how pipe 13 is fitted into the water-leg A.

Referring to my invention by letter, A is a horizontall -arranged ringor water-leg,within the circle of which is to be arranged a grate for forming the base of the furnace. A sectional view of this water-leg, which is to form the base of my boiler, will be seen in Fig. 1. On the upper side of this circular tube or water-leg A, I insert a series of tubes or flues B, at equal distance from each other. around the entire top of such water-leg. Such tubes or fiues converge at their top and enter the base of the boiler proper O by suitably-provided connections. In order to provide room Serial No. 310,990. (No model.)

for tubes B to enter the base of the conicallyshaped boiler C, which is of a much smaller diameter than the water-leg, it will be necessary to provide three rings or series of openings, thus causing the inner circle of such tubes B to stand at Varying angles with the others. The number of these tubes may be multiplied as desired. The base of the boiler is to be convex, so that each tube as it inclines toward the center will enter nearly squarely into such base. Two or more rows of tubes may be provided in the upper surface of the water-leg A, and while the number of the tubes is to be a matter of preference for the maker,I prefer to have the numher to be some multiple of six, so that onesixth of the tubes may enter the inside row of tubes in the base of the boiler, one-third of them in the middle circle or series of holes, and one-half in the outside row. The boiler O is also conical in form, so that the general form or shape of the boiler from water-leg to apex of boiler 0 presents the general form and shape of a cone.

The top of the boiler C is to be so constructed that it may be bolted to an outwardprojecting flange of the inclined sides, so that it may be readily removed for cleaning the fiues and other interior parts of the boiler. The hole in the water-leg for the entrance of pipes B is sufficiently large at the top to admit.tl1e flaring end of such pipes, while the hole gradually increases in diameter for half the distance through the upper part of the water-leg. The balance of the hole is to be of the same diameter as the hole in the flue. It will be seen that the upper half of the hole is conical in shape, so as to correspond with the enlarged end of the pipe B. The object of such arrangement is to provide sufficient room for soft metal to. be poured around the end of such tube to complete the connection, such connection, above referred to, of the pipes 13 with the water-leg as shown in the sectional view in Fig. 3. To inclose these series of tubes connecting the water-leg and boiler, I provide a housing or jacket D,which may be made of bricks or metal, as preferred, the object of which is to inclose the heat and provide for complete combustion of the gases formed in the furnace.

In operation the fire is started upon the circular grate within the circle foru'led by the water-leg, and the flames and heat rising upward pass between and around the inclined tubes 13 and around the sides of the comicallyshaped boiler O, and thence outward through the smoke-stack. The boiler proper C is to be kept sufficiently filled with water, which results in completely filling the water-leg and the inclined pipes.

It will be seen that I have produced, as stated, a compact boiler and furnace having great capacity for dry steam in the upper part of same, and for water in the water leg, inclined tubes, and lower part of inclined boiler, and that no empty tubes are exposed to the fire, at the same time unobstructed draft results from my simple arrangement of parts, all at a minimum cost of production; and, further, that the parts are easily interchangeable and can be renewed. In order to reach the fire-box or furnace proper within the space formed by the inclined tubes B, I provide that a hollow rectangularframe shall be properly connected to the tubes by cutting a sufficient number of them away upon one side and properly connecting the same to the rectangular hollow frame which is to form the casing of the door or entrance to the firebox, thus obviating the necessity of bending such tubes to effect an entrance, which would resultin diminishing the heating-surface presented to the fire.

It will be observed that I provide an automatic cut-off to regulate the supply of water to the boiler, as will be observed from the drawings, wherein float K, which consists of around air-tight cylindrical drum pivotally connected to the side of the boiler by means of rod 6. Drum K rests upon the water upon one of its ends, and as the water rises and falls the drum will have a corresponding movement, and it will be seen that when said drum rises it will force the rod e, which joined to the transverse rod 6, upward unt l the valve on the end of the supply-pipe 1S closed, thereby shutting off the supply of water. In like 1nanner,wl1en the water is lower in the boiler, the drum K is lowered correspondingly, and as it moves downward the valve in the end of the supply-pipe is open.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

A cylindro-circular water-leg provided on its upper side with the seat I), in which is arranged a series of cylindro-eonical beds for the reception of the lower ends of pipes B, the upper half of such beds being conical in form, while the lower half thereof is cylindrical and has the same diameter as the tube secured in the conical half, in combination with a conical boiler having a convex base, which provides for the square entrance therein of the pipes B, all substantially described, and for the purpose named.

In testimony whereof I afiix my signature in presence of two witnesses.

IIIRAM CURRY GROI'ES.

Witnesses:

JOHN M. HART, WILLIs llAR'I. 

